metal-organic compounds
Bis(2-methoxy-6-{[2-(methylammonio)ethyl]iminomethyl}phenolato)thiocyanatozinc(II) thiocyanate hemihydrate
aDepartment of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410014, People's Republic of China, and bSchool of Foreign Language, Jiangsu University, Jiangsu 212013, People's Republic of China
*Correspondence e-mail: sanjunpeng@163.com
The title mononuclear zinc(II) complex, [Zn(C11H16N2O2)2(NCS)]NCS·0.5H2O, consists of a complex cation, a thiocyanate anion, and half of a water molecule. The ZnII atom in the cation is five-coordinated by two imine N and two phenolate O atoms from two bidentate Schiff base ligands, and by one N atom of a thiocyanate ligand, forming a distorted trigonal-bipyramidal geometry. The ammonio H atoms are involved in hydrogen bonding with the ligand O atoms and the solvent water molecules (site occupation factor 0.5), which partially determines the conformation of the ligands.
Related literature
For background to the properties of zinc(II) complexes, see: Lipscomb & Sträter (1996); Bertini et al. (1994); Harrison et al. (2006); Tirosh et al. (2005); Musie et al. (2004); Vallee & Auld (1993). For related structures, see: Li et al. (2008); Eltayeb et al. (2008); Zhang & Wang (2007); Cai (2009).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809022326/su2115sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809022326/su2115Isup2.hkl
3-Methoxysalicylaldehyde (0.1 mmol, 15.2 mg) and N-methylethane-1,2-diamine (0.1 mmol, 7.4 mg) were stirred into 30 ml of methanol. After 1 h, ammonium thiocyanate (0.1 mmol, 7.6 mg) in water (1 ml) and zinc acetate (0.1 mmol, 22.0 mg) in methanol (10 ml) was added, and the stirring continued for a further 1 h. The filtrate was kept at rt for about a week, depositing colorless block-like crystals of the title compound.
All H atoms were positioned geometrically and refined as riding atoms: C—H = 0.93–0.97 Å, N—H = 0.90 Å, O—H = 0.85 Å, with Uiso(H) set to 1.2Ueq(C/O) and 1.5Ueq(methyl C). The structure contains solvent accessible voids of 138.00 A3, which might accommodate a disordered water molecule. The phenyl rings were refined as regular hexagons, with their ADP's made equal to one another.
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, with displacement ellipsoids drawn at the 30% probability level. |
[Zn(C11H16N2O2)2(NCS)]NCS·0.5H2O | Z = 2 |
Mr = 607.06 | F(000) = 634 |
Triclinic, P1 | Dx = 1.278 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.997 (2) Å | Cell parameters from 1416 reflections |
b = 13.017 (3) Å | θ = 2.4–24.1° |
c = 13.379 (3) Å | µ = 0.95 mm−1 |
α = 73.70 (3)° | T = 298 K |
β = 77.95 (3)° | Block, colorless |
γ = 72.25 (3)° | 0.30 × 0.28 × 0.27 mm |
V = 1577.0 (5) Å3 |
Bruker SMART APEX CCD area-detector diffractometer | 6300 independent reflections |
Radiation source: fine-focus sealed tube | 3199 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
ω scans | θmax = 26.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −12→12 |
Tmin = 0.764, Tmax = 0.784 | k = −16→16 |
12467 measured reflections | l = −16→16 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.081 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.190 | H-atom parameters constrained |
S = 0.99 | w = 1/[σ2(Fo2) + (0.0763P)2] where P = (Fo2 + 2Fc2)/3 |
6300 reflections | (Δ/σ)max < 0.001 |
346 parameters | Δρmax = 0.51 e Å−3 |
18 restraints | Δρmin = −0.37 e Å−3 |
[Zn(C11H16N2O2)2(NCS)]NCS·0.5H2O | γ = 72.25 (3)° |
Mr = 607.06 | V = 1577.0 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.997 (2) Å | Mo Kα radiation |
b = 13.017 (3) Å | µ = 0.95 mm−1 |
c = 13.379 (3) Å | T = 298 K |
α = 73.70 (3)° | 0.30 × 0.28 × 0.27 mm |
β = 77.95 (3)° |
Bruker SMART APEX CCD area-detector diffractometer | 6300 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 3199 reflections with I > 2σ(I) |
Tmin = 0.764, Tmax = 0.784 | Rint = 0.057 |
12467 measured reflections |
R[F2 > 2σ(F2)] = 0.081 | 18 restraints |
wR(F2) = 0.190 | H-atom parameters constrained |
S = 0.99 | Δρmax = 0.51 e Å−3 |
6300 reflections | Δρmin = −0.37 e Å−3 |
346 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Zn1 | 0.76677 (7) | 0.52215 (5) | 0.74443 (5) | 0.0565 (3) | |
S1 | 0.9762 (3) | 0.7599 (2) | 0.8261 (2) | 0.1405 (10) | |
S2 | 0.7074 (3) | 0.9701 (2) | 0.18236 (19) | 0.1322 (9) | |
O1 | 0.6935 (4) | 0.3968 (3) | 0.8352 (3) | 0.0743 (12) | |
O2 | 0.6337 (7) | 0.2068 (5) | 0.8807 (4) | 0.113 (2) | |
O3 | 0.7078 (5) | 0.5764 (3) | 0.6026 (3) | 0.0751 (12) | |
O4 | 0.5434 (6) | 0.6530 (5) | 0.4556 (3) | 0.0952 (15) | |
O5 | 0.9890 (14) | 0.0589 (13) | 0.7592 (16) | 0.201 (8) | 0.50 |
H5A | 0.9333 | 0.0169 | 0.7815 | 0.241* | 0.50 |
H5B | 1.0545 | 0.0478 | 0.7084 | 0.241* | 0.50 |
N1 | 0.5803 (6) | 0.6341 (5) | 0.8016 (4) | 0.0714 (14) | |
N2 | 0.5448 (7) | 0.7845 (4) | 0.5970 (4) | 0.0893 (18) | |
H2A | 0.5726 | 0.7115 | 0.5985 | 0.107* | |
H2B | 0.5746 | 0.8205 | 0.5321 | 0.107* | |
N3 | 0.9438 (6) | 0.4057 (4) | 0.6861 (5) | 0.0735 (15) | |
N4 | 0.9269 (6) | 0.2291 (4) | 0.8690 (4) | 0.0778 (15) | |
H4A | 0.9646 | 0.1849 | 0.8236 | 0.093* | |
H4B | 0.8412 | 0.2707 | 0.8519 | 0.093* | |
N5 | 0.8880 (6) | 0.5913 (5) | 0.7923 (5) | 0.0799 (16) | |
N6 | 0.6414 (11) | 0.8946 (7) | 0.3922 (8) | 0.150 (3) | |
C1 | 0.4525 (8) | 0.4901 (9) | 0.8824 (5) | 0.085 (2) | |
C2 | 0.5598 (8) | 0.3956 (7) | 0.8705 (4) | 0.0709 (19) | |
C3 | 0.5227 (10) | 0.2965 (9) | 0.8983 (5) | 0.092 (2) | |
C4 | 0.3836 (12) | 0.2933 (12) | 0.9369 (6) | 0.125 (4) | |
H4 | 0.3624 | 0.2250 | 0.9553 | 0.150* | |
C5 | 0.2823 (13) | 0.3802 (15) | 0.9484 (8) | 0.144 (6) | |
H5 | 0.1903 | 0.3741 | 0.9736 | 0.172* | |
C6 | 0.3115 (9) | 0.4821 (11) | 0.9230 (6) | 0.116 (3) | |
H6 | 0.2397 | 0.5451 | 0.9323 | 0.139* | |
C7 | 0.6075 (13) | 0.1001 (8) | 0.9051 (9) | 0.162 (5) | |
H7A | 0.5748 | 0.0793 | 0.9787 | 0.242* | |
H7B | 0.6936 | 0.0466 | 0.8876 | 0.242* | |
H7C | 0.5367 | 0.1025 | 0.8652 | 0.242* | |
C8 | 0.4715 (8) | 0.6024 (8) | 0.8540 (5) | 0.088 (2) | |
H8 | 0.3958 | 0.6569 | 0.8765 | 0.105* | |
C9 | 0.5723 (8) | 0.7536 (6) | 0.7858 (6) | 0.091 (2) | |
H9A | 0.6326 | 0.7613 | 0.8299 | 0.109* | |
H9B | 0.4757 | 0.7932 | 0.8067 | 0.109* | |
C10 | 0.6180 (9) | 0.8039 (6) | 0.6729 (6) | 0.096 (2) | |
H10A | 0.6007 | 0.8832 | 0.6640 | 0.115* | |
H10B | 0.7193 | 0.7736 | 0.6565 | 0.115* | |
C11 | 0.3859 (10) | 0.8191 (7) | 0.6135 (7) | 0.114 (3) | |
H11A | 0.3522 | 0.7958 | 0.6867 | 0.171* | |
H11B | 0.3502 | 0.7854 | 0.5731 | 0.171* | |
H11C | 0.3535 | 0.8984 | 0.5914 | 0.171* | |
C12 | 0.8471 (10) | 0.4272 (7) | 0.5243 (6) | 0.085 (2) | |
C13 | 0.7338 (8) | 0.5214 (6) | 0.5289 (5) | 0.0712 (19) | |
C14 | 0.6466 (9) | 0.5591 (7) | 0.4474 (5) | 0.081 (2) | |
C15 | 0.6657 (11) | 0.5033 (9) | 0.3720 (6) | 0.104 (3) | |
H15 | 0.6036 | 0.5282 | 0.3221 | 0.125* | |
C16 | 0.7754 (14) | 0.4109 (11) | 0.3687 (8) | 0.118 (4) | |
H16 | 0.7890 | 0.3745 | 0.3152 | 0.142* | |
C17 | 0.8643 (11) | 0.3716 (7) | 0.4418 (8) | 0.105 (3) | |
H17 | 0.9377 | 0.3078 | 0.4389 | 0.126* | |
C18 | 0.4627 (10) | 0.7033 (8) | 0.3714 (6) | 0.122 (3) | |
H18A | 0.5249 | 0.7180 | 0.3070 | 0.183* | |
H18B | 0.3979 | 0.7716 | 0.3832 | 0.183* | |
H18C | 0.4105 | 0.6543 | 0.3666 | 0.183* | |
C19 | 0.9490 (8) | 0.3819 (5) | 0.5987 (7) | 0.085 (2) | |
H19 | 1.0291 | 0.3281 | 0.5803 | 0.103* | |
C20 | 1.0633 (7) | 0.3501 (6) | 0.7456 (7) | 0.097 (2) | |
H20A | 1.1159 | 0.4029 | 0.7418 | 0.117* | |
H20B | 1.1263 | 0.2913 | 0.7137 | 0.117* | |
C21 | 1.0177 (7) | 0.3020 (6) | 0.8579 (7) | 0.085 (2) | |
H21A | 1.1008 | 0.2603 | 0.8923 | 0.102* | |
H21B | 0.9667 | 0.3617 | 0.8926 | 0.102* | |
C22 | 0.9086 (9) | 0.1580 (7) | 0.9783 (6) | 0.105 (3) | |
H22A | 0.9993 | 0.1252 | 1.0028 | 0.158* | |
H22B | 0.8676 | 0.1005 | 0.9775 | 0.158* | |
H22C | 0.8473 | 0.2029 | 1.0243 | 0.158* | |
C23 | 0.9247 (7) | 0.6603 (6) | 0.8069 (5) | 0.0772 (18) | |
C24 | 0.6730 (10) | 0.9266 (7) | 0.3022 (8) | 0.112 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.0650 (5) | 0.0525 (4) | 0.0489 (4) | −0.0206 (3) | 0.0020 (3) | −0.0083 (3) |
S1 | 0.183 (2) | 0.131 (2) | 0.153 (2) | −0.0873 (19) | −0.0027 (18) | −0.0688 (17) |
S2 | 0.178 (2) | 0.1057 (17) | 0.0884 (16) | −0.0077 (16) | −0.0165 (15) | −0.0174 (13) |
O1 | 0.072 (3) | 0.074 (3) | 0.070 (3) | −0.034 (2) | −0.010 (2) | 0.010 (2) |
O2 | 0.139 (5) | 0.099 (4) | 0.120 (4) | −0.080 (4) | −0.067 (4) | 0.036 (3) |
O3 | 0.107 (3) | 0.068 (3) | 0.047 (2) | −0.025 (2) | 0.001 (2) | −0.014 (2) |
O4 | 0.133 (4) | 0.111 (4) | 0.050 (3) | −0.053 (4) | −0.013 (3) | −0.007 (3) |
O5 | 0.117 (10) | 0.167 (14) | 0.36 (3) | −0.047 (10) | −0.001 (12) | −0.148 (16) |
N1 | 0.074 (4) | 0.090 (4) | 0.044 (3) | −0.008 (3) | −0.009 (3) | −0.022 (3) |
N2 | 0.131 (6) | 0.059 (3) | 0.068 (4) | −0.018 (4) | −0.021 (4) | −0.001 (3) |
N3 | 0.073 (4) | 0.063 (3) | 0.081 (4) | −0.028 (3) | 0.019 (3) | −0.021 (3) |
N4 | 0.096 (4) | 0.053 (3) | 0.089 (4) | −0.024 (3) | −0.028 (3) | −0.007 (3) |
N5 | 0.076 (4) | 0.084 (4) | 0.095 (4) | −0.036 (3) | 0.004 (3) | −0.038 (3) |
N6 | 0.199 (7) | 0.121 (6) | 0.124 (6) | −0.057 (5) | 0.000 (5) | −0.018 (5) |
C1 | 0.080 (6) | 0.151 (8) | 0.034 (3) | −0.047 (6) | −0.003 (3) | −0.021 (4) |
C2 | 0.073 (5) | 0.111 (6) | 0.030 (3) | −0.046 (5) | −0.010 (3) | 0.007 (3) |
C3 | 0.114 (7) | 0.130 (7) | 0.047 (4) | −0.075 (6) | −0.033 (4) | 0.021 (4) |
C4 | 0.120 (8) | 0.226 (13) | 0.056 (5) | −0.121 (9) | −0.014 (6) | 0.007 (6) |
C5 | 0.105 (8) | 0.31 (2) | 0.069 (6) | −0.127 (11) | 0.016 (6) | −0.059 (9) |
C6 | 0.074 (5) | 0.236 (12) | 0.060 (5) | −0.057 (7) | 0.012 (4) | −0.067 (6) |
C7 | 0.233 (12) | 0.125 (8) | 0.174 (10) | −0.131 (8) | −0.104 (9) | 0.040 (7) |
C8 | 0.063 (4) | 0.146 (8) | 0.041 (4) | 0.000 (5) | −0.004 (3) | −0.032 (4) |
C9 | 0.113 (6) | 0.079 (5) | 0.076 (5) | 0.007 (4) | −0.023 (4) | −0.039 (4) |
C10 | 0.134 (7) | 0.066 (4) | 0.093 (6) | −0.021 (4) | −0.032 (5) | −0.021 (4) |
C11 | 0.120 (7) | 0.102 (6) | 0.115 (7) | −0.005 (5) | −0.038 (5) | −0.029 (5) |
C12 | 0.111 (6) | 0.084 (5) | 0.064 (4) | −0.053 (5) | 0.032 (4) | −0.024 (4) |
C13 | 0.095 (5) | 0.070 (4) | 0.052 (4) | −0.049 (4) | 0.032 (4) | −0.019 (3) |
C14 | 0.119 (6) | 0.092 (5) | 0.044 (4) | −0.062 (5) | 0.012 (4) | −0.015 (4) |
C15 | 0.143 (8) | 0.137 (8) | 0.058 (5) | −0.086 (7) | 0.022 (5) | −0.037 (5) |
C16 | 0.162 (10) | 0.148 (9) | 0.082 (6) | −0.103 (8) | 0.051 (6) | −0.064 (7) |
C17 | 0.134 (7) | 0.093 (6) | 0.088 (6) | −0.054 (5) | 0.047 (6) | −0.043 (5) |
C18 | 0.151 (7) | 0.166 (9) | 0.066 (5) | −0.080 (7) | −0.028 (5) | −0.003 (5) |
C19 | 0.087 (5) | 0.051 (4) | 0.103 (6) | −0.031 (4) | 0.042 (5) | −0.020 (4) |
C20 | 0.056 (4) | 0.068 (5) | 0.156 (8) | −0.017 (4) | 0.000 (5) | −0.018 (5) |
C21 | 0.072 (4) | 0.062 (4) | 0.131 (7) | −0.022 (4) | −0.026 (4) | −0.022 (4) |
C22 | 0.139 (7) | 0.089 (5) | 0.085 (5) | −0.028 (5) | −0.047 (5) | 0.004 (4) |
C23 | 0.077 (5) | 0.085 (5) | 0.072 (4) | −0.022 (4) | −0.002 (3) | −0.029 (4) |
C24 | 0.166 (8) | 0.074 (5) | 0.092 (6) | −0.041 (5) | −0.002 (6) | −0.015 (5) |
Zn1—O3 | 1.977 (4) | C5—H5 | 0.9300 |
Zn1—O1 | 1.979 (4) | C6—H6 | 0.9300 |
Zn1—N5 | 2.001 (6) | C7—H7A | 0.9600 |
Zn1—N3 | 2.119 (5) | C7—H7B | 0.9600 |
Zn1—N1 | 2.135 (5) | C7—H7C | 0.9600 |
S1—C23 | 1.632 (8) | C8—H8 | 0.9300 |
S2—C24 | 1.545 (10) | C9—C10 | 1.503 (10) |
O1—C2 | 1.325 (7) | C9—H9A | 0.9700 |
O2—C3 | 1.381 (10) | C9—H9B | 0.9700 |
O2—C7 | 1.426 (9) | C10—H10A | 0.9700 |
O3—C13 | 1.314 (7) | C10—H10B | 0.9700 |
O4—C14 | 1.353 (9) | C11—H11A | 0.9600 |
O4—C18 | 1.412 (9) | C11—H11B | 0.9600 |
O5—H5A | 0.8500 | C11—H11C | 0.9600 |
O5—H5B | 0.8500 | C12—C13 | 1.399 (10) |
N1—C8 | 1.280 (9) | C12—C17 | 1.437 (11) |
N1—C9 | 1.489 (9) | C12—C19 | 1.450 (11) |
N2—C10 | 1.483 (9) | C13—C14 | 1.423 (10) |
N2—C11 | 1.499 (10) | C14—C15 | 1.351 (10) |
N2—H2A | 0.9000 | C15—C16 | 1.363 (13) |
N2—H2B | 0.9000 | C15—H15 | 0.9300 |
N3—C19 | 1.278 (9) | C16—C17 | 1.347 (13) |
N3—C20 | 1.460 (9) | C16—H16 | 0.9300 |
N4—C21 | 1.462 (8) | C17—H17 | 0.9300 |
N4—C22 | 1.503 (9) | C18—H18A | 0.9600 |
N4—H4A | 0.9000 | C18—H18B | 0.9600 |
N4—H4B | 0.9000 | C18—H18C | 0.9600 |
N5—C23 | 1.144 (8) | C19—H19 | 0.9300 |
N6—C24 | 1.168 (10) | C20—C21 | 1.489 (10) |
C1—C2 | 1.387 (10) | C20—H20A | 0.9700 |
C1—C6 | 1.425 (11) | C20—H20B | 0.9700 |
C1—C8 | 1.465 (11) | C21—H21A | 0.9700 |
C2—C3 | 1.380 (10) | C21—H21B | 0.9700 |
C3—C4 | 1.388 (12) | C22—H22A | 0.9600 |
C4—C5 | 1.290 (16) | C22—H22B | 0.9600 |
C4—H4 | 0.9300 | C22—H22C | 0.9600 |
C5—C6 | 1.380 (15) | ||
O3—Zn1—O1 | 114.77 (18) | C10—C9—H9A | 109.4 |
O3—Zn1—N5 | 122.2 (2) | N1—C9—H9B | 109.4 |
O1—Zn1—N5 | 123.0 (2) | C10—C9—H9B | 109.4 |
O3—Zn1—N3 | 89.1 (2) | H9A—C9—H9B | 108.0 |
O1—Zn1—N3 | 88.67 (19) | N2—C10—C9 | 114.0 (7) |
N5—Zn1—N3 | 93.1 (2) | N2—C10—H10A | 108.8 |
O3—Zn1—N1 | 89.57 (18) | C9—C10—H10A | 108.8 |
O1—Zn1—N1 | 89.0 (2) | N2—C10—H10B | 108.8 |
N5—Zn1—N1 | 90.4 (2) | C9—C10—H10B | 108.8 |
N3—Zn1—N1 | 176.5 (2) | H10A—C10—H10B | 107.7 |
C2—O1—Zn1 | 128.0 (4) | N2—C11—H11A | 109.5 |
C3—O2—C7 | 118.9 (8) | N2—C11—H11B | 109.5 |
C13—O3—Zn1 | 128.1 (4) | H11A—C11—H11B | 109.5 |
C14—O4—C18 | 116.7 (7) | N2—C11—H11C | 109.5 |
H5A—O5—H5B | 120.0 | H11A—C11—H11C | 109.5 |
C8—N1—C9 | 116.2 (6) | H11B—C11—H11C | 109.5 |
C8—N1—Zn1 | 122.4 (5) | C13—C12—C17 | 118.7 (9) |
C9—N1—Zn1 | 121.3 (5) | C13—C12—C19 | 123.6 (7) |
C10—N2—C11 | 116.9 (6) | C17—C12—C19 | 117.7 (9) |
C10—N2—H2A | 108.1 | O3—C13—C12 | 123.0 (7) |
C11—N2—H2A | 108.1 | O3—C13—C14 | 119.9 (7) |
C10—N2—H2B | 108.1 | C12—C13—C14 | 117.1 (7) |
C11—N2—H2B | 108.1 | C15—C14—O4 | 124.8 (8) |
H2A—N2—H2B | 107.3 | C15—C14—C13 | 122.1 (9) |
C19—N3—C20 | 118.3 (7) | O4—C14—C13 | 113.0 (6) |
C19—N3—Zn1 | 121.3 (5) | C14—C15—C16 | 120.4 (10) |
C20—N3—Zn1 | 120.4 (5) | C14—C15—H15 | 119.8 |
C21—N4—C22 | 113.0 (6) | C16—C15—H15 | 119.8 |
C21—N4—H4A | 109.0 | C17—C16—C15 | 120.8 (9) |
C22—N4—H4A | 109.0 | C17—C16—H16 | 119.6 |
C21—N4—H4B | 109.0 | C15—C16—H16 | 119.6 |
C22—N4—H4B | 109.0 | C16—C17—C12 | 120.8 (9) |
H4A—N4—H4B | 107.8 | C16—C17—H17 | 119.6 |
C23—N5—Zn1 | 157.9 (6) | C12—C17—H17 | 119.6 |
C2—C1—C6 | 120.1 (9) | O4—C18—H18A | 109.5 |
C2—C1—C8 | 124.6 (6) | O4—C18—H18B | 109.5 |
C6—C1—C8 | 115.3 (9) | H18A—C18—H18B | 109.5 |
O1—C2—C3 | 119.7 (8) | O4—C18—H18C | 109.5 |
O1—C2—C1 | 123.2 (7) | H18A—C18—H18C | 109.5 |
C3—C2—C1 | 117.1 (8) | H18B—C18—H18C | 109.5 |
C2—C3—O2 | 113.9 (7) | N3—C19—C12 | 128.9 (7) |
C2—C3—C4 | 120.6 (11) | N3—C19—H19 | 115.5 |
O2—C3—C4 | 125.5 (9) | C12—C19—H19 | 115.5 |
C5—C4—C3 | 123.3 (12) | N3—C20—C21 | 112.5 (6) |
C5—C4—H4 | 118.4 | N3—C20—H20A | 109.1 |
C3—C4—H4 | 118.4 | C21—C20—H20A | 109.1 |
C4—C5—C6 | 119.4 (11) | N3—C20—H20B | 109.1 |
C4—C5—H5 | 120.3 | C21—C20—H20B | 109.1 |
C6—C5—H5 | 120.3 | H20A—C20—H20B | 107.8 |
C5—C6—C1 | 119.5 (11) | N4—C21—C20 | 111.9 (6) |
C5—C6—H6 | 120.2 | N4—C21—H21A | 109.2 |
C1—C6—H6 | 120.2 | C20—C21—H21A | 109.2 |
O2—C7—H7A | 109.5 | N4—C21—H21B | 109.2 |
O2—C7—H7B | 109.5 | C20—C21—H21B | 109.2 |
H7A—C7—H7B | 109.5 | H21A—C21—H21B | 107.9 |
O2—C7—H7C | 109.5 | N4—C22—H22A | 109.5 |
H7A—C7—H7C | 109.5 | N4—C22—H22B | 109.5 |
H7B—C7—H7C | 109.5 | H22A—C22—H22B | 109.5 |
N1—C8—C1 | 127.5 (7) | N4—C22—H22C | 109.5 |
N1—C8—H8 | 116.3 | H22A—C22—H22C | 109.5 |
C1—C8—H8 | 116.3 | H22B—C22—H22C | 109.5 |
N1—C9—C10 | 111.2 (5) | N5—C23—S1 | 179.2 (7) |
N1—C9—H9A | 109.4 | N6—C24—S2 | 177.3 (10) |
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4B···O2 | 0.90 | 2.38 | 3.001 (8) | 126 |
N4—H4B···O1 | 0.90 | 1.84 | 2.682 (7) | 155 |
N4—H4A···O5 | 0.90 | 1.99 | 2.839 (14) | 157 |
N2—H2B···N6 | 0.90 | 1.93 | 2.834 (11) | 179 |
N2—H2A···O4 | 0.90 | 2.35 | 2.889 (8) | 119 |
N2—H2A···O3 | 0.90 | 1.86 | 2.691 (7) | 153 |
Experimental details
Crystal data | |
Chemical formula | [Zn(C11H16N2O2)2(NCS)]NCS·0.5H2O |
Mr | 607.06 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 9.997 (2), 13.017 (3), 13.379 (3) |
α, β, γ (°) | 73.70 (3), 77.95 (3), 72.25 (3) |
V (Å3) | 1577.0 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.95 |
Crystal size (mm) | 0.30 × 0.28 × 0.27 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.764, 0.784 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12467, 6300, 3199 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.628 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.081, 0.190, 0.99 |
No. of reflections | 6300 |
No. of parameters | 346 |
No. of restraints | 18 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.51, −0.37 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4B···O2 | 0.90 | 2.38 | 3.001 (8) | 126 |
N4—H4B···O1 | 0.90 | 1.84 | 2.682 (7) | 155 |
N4—H4A···O5 | 0.90 | 1.99 | 2.839 (14) | 157 |
N2—H2B···N6 | 0.90 | 1.93 | 2.834 (11) | 179 |
N2—H2A···O4 | 0.90 | 2.35 | 2.889 (8) | 119 |
N2—H2A···O3 | 0.90 | 1.86 | 2.691 (7) | 153 |
Acknowledgements
We acknowledge Changsha University of Science and Technology for the research grants.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Zinc is the second most abundant transition metal in biology, functions as the active site of hydrolytic enzymes, such as carboxypeptidase and carbonic anhydrase, where it is in a hard donor coordination of nitrogen and oxygen (Lipscomb & Sträter, 1996; Bertini et al., 1994). Zinc atom can readily adopt four-, five- or six-coordination (Harrison et al., 2006; Tirosh et al., 2005; Musie et al., 2004; Vallee & Auld, 1993). As a continuation of work on this area, we report herein the new title zinc(II) complex, with the Schiff base 2-methoxy-6-[(2-methylaminoethylimino)methyl]phenol.
The title compound consists of a complex cation, a thiocyanate anion, and a half water molecule of crystallization (Fig. 1). The ZnII atom in the cation is five-coordinated by two imine N and two phenolate O atoms, from two Schiff base ligands, and by one N atom of a thiocyanate ligand, so forming a trigonal-bipyramidal geometry. The amine N atom is protonated and does not coordinate to the metal ion. The NH2+ hydrogen atoms are involved in hydrogen bonding with the ligand O-atoms which partially determines the conformation of the ligands. The Zn—O and Zn—N bond lengths [1.977 (4) - 1.979 (4) Å and 2.001 (6) - 2.135 (5) Å, respectively] are comparable to the values in similar complexes (Li et al., 2008; Eltayeb et al., 2008; Zhang & Wang, 2007; Cai, 2009).